Phase-to-phase fault ke phoso ea motlakase e ikhethang ho li-motor windings tsa mekhahlelo e meraro . Ho tloha ho lipalo-palo tsa li-motor tse fosahetseng, ho ka fumanoa hore ho latela liphoso tsa mohato-mohato, mathata a li-motor tse peli li batla li tsepamisitsoe, 'me boholo ba tsona li etsahala lipheletsong tsa mapheo.

Ho tloha kabong ea likhoele tse tsoelipanang tsa enjene, bolelele ba likhoele tse tsoelipanang tsa lipolao tse peli li batla li le kholo, 'me ho bopa ha qetello ke bothata bo boholo ts'ebetsong ea ho kenya terata. Ho feta moo, ho thata ho lokisa sekhahla sa mohato ho isa mohatong le ho tlama li-windings, 'me ho falla ha karolo-to-phase ho atisa ho etsahala. potso.

Nakong ea ts'ebetso ea tlhahiso, baetsi ba likoloi ba emeng ba tla lekola liphoso tsa mohato ho isa mohatong ka mokhoa oa ho mamella motlakase, empa boemo bo lekanyelitsoeng ba ho robeha bo ka 'na ba se ke ba fumanoa nakong ea tlhahlobo ea ts'ebetso ea maqhubu le tlhahlobo ea ho se be le moroalo. Mathata a joalo a ka 'na a etsahala Ha enjene e sebetsa tlas'a mojaro.

Teko ea boima ba enjene ke mofuta oa teko ea mofuta, 'me ke teko ea ho se be le moroalo feela e etsoang nakong ea tlhahlobo ea feme, e leng le leng la mabaka a etsang hore koloi e tlohe fekthering ka mathata. Leha ho le joalo, ho latela pono ea taolo ea boleng ba tlhahiso, re lokela ho qala ka maemo a ts'ebetso, ho fokotsa le ho felisa ts'ebetso e mpe, le ho nka mehato e hlokahalang ea ho matlafatsa mefuta e fapaneng ea matsoeli.

Palo ea lipara tsa lipalo tsa enjene

Sete e 'ngoe le e' ngoe ea li-coil tsa motlakase oa mekhahlelo e meraro ea AC e tla hlahisa lipalo tsa makenete tsa N le S, 'me palo ea lipalo tsa makenete tse teng mohatong ka mong oa enjene ka' ngoe ke palo ea lipalo. Kaha lipalo tsa makenete li hlaha ka lipara, enjene e na le 2, 4, 6, 8… lipalo.

Ha ho na le khoele e le 'ngoe feela mohatong o mong le o mong oa matsoelintsoeke a mekhahlelo ea A, B, le C, e arolelanoang ka mokhoa o ts'oanang le o lekanang ka selikalikoe, liphetoho tsa hona joale hanngoe, 'me matla a khoheli a potolohang a reteleha hang, e leng palo ea lipalo. Haeba mohato o mong le o mong oa A, B, le C oa mekhahlelo e meraro o entsoe ka likhoele tse peli ka tatellano, 'me bolelele ba khoele e' ngoe le e 'ngoe e le 1/4 selikalikoe, joale matla a khoheli a kopaneng a thehiloeng ke mehato e meraro e ntse e potoloha. matla a khoheli, 'me liphetoho tsa hona joale hang , matla a khoheli a potolohang a fetoha 1/2 feela, e leng lipara tse peli tsa lipalo. Ka mokhoa o ts'oanang, haeba li- windings li hlophisitsoe ho ea ka melao e itseng, lipara tse 3 tsa lipalo, lihlopha tse 4 tsa lipalo kapa ka kakaretso, P pairs ea lipalo li ka fumanoa. P ke palo ea logarithm.

Enjene ea lipalo tse robeli e bolela hore rotor e na le lipalo tse 8 tsa makenete, 2p = 8, ke hore, koloi e na le lipara tse 4 tsa lipalo tsa makenete. Ka kakaretso, lijenereithara tsa turbo ke li-motor tse patiloeng, tse nang le lipara tse 'maloa, hangata lipara tse 1 kapa tse 2, le n=60f/p, kahoo lebelo la eona le phahame haholo, ho fihlela ho 3000 revolutions (maqhubu a matla), le Palo ea lipalo tsa jenereithara ea motlakase oa metsi e kholo haholo, 'me sebopeho sa rotor ke mofuta oa palo e ikhethang,' me ts'ebetso e batla e rarahane. Ka lebaka la palo e kholo ea lipalo, lebelo la eona le tlaase haholo, mohlomong ka makhetlo a seng makae feela ka motsotsoana.

Palo ea lebelo la motor synchronous

Lebelo la synchronous la enjene le baloa ho latela foromo (1). Ka lebaka la ho thella ha enjene ea asynchronous, ho na le phapang e itseng lipakeng tsa lebelo la 'nete la enjene le lebelo la synchronous.

n=60f/p………………………(1)

Ka mokhoa (1):

n - lebelo la koloi;

60 - e bua ka nako, metsotsoana e 60;

F--maqhubu a matla, maqhubu a matla naheng ea heso ke 50Hz, le maqhubu a matla linaheng tse ling ke 60 Hz;

P——palo ea lipara tsa palo tsa enjene, joalo ka enjene ea lipalo tse 2, P=1.

Ka mohlala, bakeng sa motlakase oa 50Hz, lebelo la synchronous la 2-pole (1 para ea lipalo) motor ke 3000 rpm; lebelo la koloi ea 4-pole (lipara tse 2 tsa lipalo) ke 60×50/2=1500 rpm.

Tabeng ea matla a sa khaotseng a hlahisoang, ha palo ea lipara tsa palo ea enjene e ntse e eketseha, e theola lebelo la enjene, empa torque ea eona e kholoanyane. Ka hona, ha u khetha enjene, nahana hore na ho qala torque ho hloka bokae.

Khafetsa ea mekhahlelo e meraro e fapanyetsanang hona joale naheng ea rona ke 50Hz. Ka hona, lebelo la synchronous la 2-pole motor ke 3000r/min, lebelo la synchronous la 4-pole motor ke 1500r/min, lebelo la synchronous la 6-pole motor ke 1000r/min, le lebelo la synchronous la Enjene ea 8-pole ke 750r/min , Lebelo la synchronous la 10-pole motor ke 600r/min, 'me lebelo la synchronous la 12-pole motor ke 500r/min.

---

Nako ea poso: Apr-08-2023